It's a smart approach for Tinder, given that it still has yet to monetize the app.

Even though Android owns 59.1% of the operating system market, device fragmentation is a huge, costly issue for developers. It takes a lot of resources for a smaller company to make an app that will work on the various Android devices out there.

Since carriers determine when to deploy Android updates, there are a ton of Android smartphones out there running different versions of the operating system (see chart below). Meanwhile, there's a variety of phones out there with different screen sizes and internal hardware that further complicate development.

So once the demand is truly there, that's when Tinder will launch for Android.